Home / 12,977.40-19,459.70-4,211.18

Finding the Fourth Proportional to 12,977.40, 19,459.70 and 4,211.18

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Solution

The fourth proportional to 12,977.40, 19,459.70 and 4,211.18 is: 6,314.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.40 : 19,459.70 = 4,211.18 : x
  2. Step 2: Convert to fraction form
    12,977.40/19,459.70 = 4,211.18/x
  3. Step 3: Cross multiply
    12,977.40x = 19,459.70 × 4,211.18
  4. Step 4: Simplify right side
    12,977.40x = 81,948,299.45
  5. Step 5: Solve for x
    x = 81,948,299.45/12,977.40
  6. Step 6: Final answer
    x = 6,314.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.